US 3,958,566 AGranted

Suction control device for an endoscope

AssigneeOlympus Optical Co., Ltd.

InventorHiroyuki Furihata

Life of this patent

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Abstract

A sliding tube is disposed within a cylindrical insertion pipe. Around the insertion pipe there is provided a surrounding wall member defining a space with the pipe, said space communicating with a suction instrument via a suction pipe and simultaneously with the interior hole of the insertion pipe via a communicating port. The opening planes of the respective upper end opening portions of the insertion pipe and space are rendered substantially flush with each other, each of said upper end opening portions having a size large enough to permit it to be closed by the operator's finger. When an injection instrument is fitted into the upper end opening of the insertion pipe, the sliding tube is lowered to close said communicating port. The surrounding wall member is detachably fitted to a receiving member secured to an endoscope body.

Claims9

Dependent claims

A suction control device comprising:

an endoscope having a body, a cylindrical insertion pipe having a through bore interiorly thereof and extending substantially in axial direction of said pipe, the lower end of said through bore communicating with a channel extending interiorly of said endoscope body and the upper end thereof being open to the exterior, said insertion pipe having an upper end opening portion with a shape permitting the end portion of an injection instrument to be inserted thereinto, a wall member surrounding at least partially the outer circumference of said insertion pipe and defining a closed space with said insertion pipe, a suction pipe, said space communicating with said suction pipe and having an upper end opening portion substantially flush with said upper end opening portion of said insertion pipe, and opening means formed in the insertion pipe for selectively establishing communication between said space and the through bore of said insertion pipe.

Dependencies are inferred from the claim text.

Facts

Application: 05/500,162Filed 23 Aug 1974
Priority: JA 48-100395[U]27 Aug 1973
Granted: 25 May 1976
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61M 1/7411
With means for varying suction manually: by changing the size of a vent
A61B 1/00068
Proximal part of endoscope body, e.g. handles: valve switch arrangements
A61B 1/00137
Accessories for endoscopes: end pieces at either end of the endoscope, e.g. caps, seals or forceps plugs
A61B 1/12
Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g.…:…